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Table 3 Epidemiology of oqxAB in Klebsiella pneumoniae

From: The nature and epidemiology of OqxAB, a multidrug efflux pump

References

Bacterial species

Year(s) of isolates collection

Geographic area

Sample source

Percentage of oqxAB carring isolates (no. of isolates)

Resistance phenotype(s)

Descriptions

[19]

K. pneumoniae

1998–2006

Seoul Korea

Human

K. pneumoniae: 74.1% (100/135)

OLA, CIP

This is the first report of the presence of an oqxAB-containing plasmid in a human isolate of E. coli.

[14]

K. pneumoniae Klebsiella spp.

2010

Shanghai China

Human

K. pneumoniae: 100% (154/154)

NAL, CIP, NOR, LVX, OLA, TMP, CHL, TET

Variants of oqxA2, oqxB2 and oqxB3 were identified.

[67]

K. pneumoniae

2005–2010

Seoul, Korea

Human

K. pneumoniae: 10.8% (11/102)

NAL, LVX, AK, GEN, TOB

The oqxAB gene was only found in K. pneumoniae isolates.

[71]

K. pneumoniae,

2010

Tunis

Human

K. pneumoniae: 65% (26/40)

GEN, TOB, AK, NAL, CIP, SXT

The prevalence of PMQR determinants among ESBL-producing strains

[8]

K. pneumoniae

2012

Northeast Ohio

Human

K. pneumoniae: 100% (36/36)

CIP

KPC-2 and KPC-3 types β-lactamase (bla) genes

[8]

K. pneumoniae

2006–2009

New York, New

Jersey, Pennsylvania

Human

K. pneumoniae: 83.3% (5/6)

CIP

KPC-2 and KPC-3 types β-lactamase (bla) genes

[8]

K. pneumoniae

1996–1997

Taiwan, Turkey, Australia, South Africa, Argentina, Belgium, the US

Human

K. pneumoniae: 87.5% (14/16)

TEM-10, SHV-2, SHV-5, CTX-M-2, CTX-M-3 types β-lactamase (bla) genes

[68]

K. pneumoniae

2012–2014

Jiangsu, China

Human

K. pneumoniae: 67.6% (50/74)

AK, Q

Novel mutants (oqxA11, oqxB13, oqxB27, and oqxB28) were identified.

[69]

K. pneumoniae

2014–2015

Tehran, Iran

Human

oqxA: 56.7% (140/247),

oqxB: 54.6% (135/247)

CAZ, NOR, CTX, CPD, NAL, CIP, GEN, TGC,AK

The predominant coexisting ESBL and PMQR profile among our isolates included blaCTX-M and aac(6′)-Ib, oqxA, oqxB (28.3%) and blaTEM, blaSHV and aac(6′)-Ib, oqxA, and oqxB (19.4%) profile.

  1. Notes: OLA olaquindox, CHL chloramphenicol, CIP ciprofloxacin, TET tetracycline, SXT sulfamethoxazole-trimethoprim, LVX levofloxacin, CTX cefotaxime, CAZ ceftazidime, GEN gentamicin, CTX cefotaxime, AK amikacin, TOB tobramycin, NAL nalidixic acid, CPD cefpodoxime, TGC tigecycline, Q quinolones